[Libreoffice-bugs] [Bug 128658] New: image compress and impress optimization Defaults

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=128658

            Bug ID: 128658
           Summary: image compress and impress optimization Defaults
           Product: LibreOffice
           Version: unspecified
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: graphics stack
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: kainz.a at gmail.com

Created attachment 155620
  --> https://bugs.documentfoundation.org/attachment.cgi?id=155620&action=edit
Optimize Images Presets

If you would like to compress images in LibO the default settings are:

compress single image
---------------------
JPEG Quality: 90
PNG Compression: 9
Resolution: 96 DPI

If you use the default settings for Presentation minimizer the default settings
are:

Impress minimize
-----------------
JPEG Quality: 75
Resolution: 150 DPI

Gimp Defaults
JPEG Quality: 90
PNG Quality: 6

Krita Defaults
JPEG Quality: 80
PNG Quality: 7

Compress single Image
=====================
was used in writer, calc, ... everywhere the goal should be the print, cause if
it work on print, it will work on the screen to.
-> JPEG Quality: 90 don't compress them very much
-> PNG Compression: 9 mean no compression at all
-> Resolution: 96 mean optimized for the screen
-> conclusion less use of JPEG/PNG compression feature but lowest useful
resolution.

My proposal:
- JPEG Quality Default: 80
- PNG Compression Default: 7
- Resolution Default: 
  300 DPI for single image compression (default is optimizes for printout)
  150 DPI for impress

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